Before writing a SCI paper, author friends need to know their research direction, and at the same time, they can find a suitable SCI journal according to the impact factor. I believe there are many people who want to publish papers in the first area of SCI, so what is the impact factor of the first area? In this issue, I will share relevant knowledge with you.
The impact factor is an internationally accepted journal evaluation index. Generally speaking, the higher the impact factor, the greater the impact of the journal. SCI journals also follow this principle, so they are divided, namely the JCR division formulated by Thomson Reuters and the SCl division of the Chinese Academy of Sciences, both of which are divided based on the impact factor of journals included in SCI.
SCl division of the Chinese Academy of Sciences: The SCI division of the Chinese Academy of Sciences is divided according to the three-year average impact factor of the journal; the first area: the top 5%; the second area: 6%~20%; the third area: 21%~50%; the fourth area: the last 50%;
JCR division: It is to arrange the impact factors of all journals in a certain discipline in descending order, and then divide them into four areas. The proportion of each area is equal, both of which are 25%.
In fact, in the Sci division, which is more reliable, JCR or Chinese Academy of Sciences is not absolute. In fact, both division methods are more authoritative and are only used for reference. How to look at it, the most direct method is to see which one your school/unit recognizes.
How high is the impact factor of SCI journals?
1. Calculation method of SCI impact factor: the total number of citations of the journal in the two years before the publication year ÷ the total number of articles published by the journal in the previous two years. In general, Impact Factor > 1 indicates a high citation rate.
2. Impact factor score: The score of CI also becomes the IF score, IF = the number of citations in the previous two years / the number of articles included in the previous two years. SCI journals generally include more science and engineering, taking chemistry journals as an example, If the IF is less than 3, it is very general, if it is about 5, it is considered to be an excellent journal for small majors, if it is around 10, it is a very good journal, and if it is above 10, it is generally a review journal.
3. The impact factor is the key when choosing a journal, and the level of the journal should be positioned according to the size of the impact factor. Generally, journals with an impact factor below 5 are considered ordinary journals in SCI journals, and journals with an impact factor of 5 to 10 are relatively excellent journals. The impact factor of a journal may be iconic in a certain field, but it cannot be limited to a single field. Although the impact factor is a sign that we can identify the journal level, it cannot be generalized. Different fields and different majors have different impact factors.
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